MK31VT864A-8YC 98.07.17
AC CHARACTERISTIC
(
)
Vcc=3.3V ± 0.3V, Ta = 0 to 70 °C
NOTE 1, 2
.
Module Spec.
Unit Note
Parameter
Symbol
Min.
Max.
Clock Cycle Time
CL=3
8
12
-
-
ns
ns
t
CC
CL=2
CL=3
CL=2
-
Access Time from Clock
6
ns
3, 4
3, 4
t
AC
-
10
ns
Clock "H" Pulse Time
Clock "L" Pulse Time
Input Setup Time
Input Hold Time
3
-
ns
t
CH
3
-
ns
t
CL
2
-
ns
t
SI
HI
1
-
ns
t
Output Low Impedance Time from Clock
Output High Impedance Time from Clock
Output Hold from Clock
3
-
ns
t
OLZ
OHZ
-
8
ns
t
3
-
ns
3
t
OH
/RAS Cycle Time
80
30
48
20
8
-
ns
t
RC
/RAS Precharge Time
-
ns
t
RP
/RAS Active Time
100,000
ns
t
RAS
RCD
/RAS to /CAS Delay Time
Write Recovery Time
-
-
ns
t
ns
t
WR
/RAS to /RAS Bank Active Delay Time
Refresh Time
16
-
-
ns
t
RRD
64
-
ms
ns
t
REF
PDE
Power-down Exit Set-up Time
Input Level Transition Time
/CAS to /CAS Delay Time (Min)
Clock Disable Time from CKE
Data Output High Impedance Time from
t
t +1CLK
SI
-
3
ns
t
T
1
1
2
Cycle
Cycle
Cycle
I
CCD
I
CKE
I
DOZ
Data Input Mask Time from DQMB
0
0
3
2
2
2
Cycle
Cycle
Cycle
Cycle
Cycle
Cycle
I
DOD
Data Input Time from Write Command
I
DWD
Data Output High Inpedance
CL=3
CL=2
I
ROH
Time from Precharge Command
Active Command Input Time from MODE
Write Command Input Time from Output
I
MRD
t
OWD
NOTES:
1) AC measurements assume tT=1ns.
2) The reference level for timing of input signals is 1.4V.
3) This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF
(RLoad is 50ohm).
4) An access time is measured at 1.4V.
5) If tT is longer than 1ns, the reference level for timing of input signals are VIH and VIL.
50Ω
OUTPUT LOAD
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